neoterism
/nɪˈɒtərɪz(ə)m/noun
Originally: modernity, novelty, innovation (especially in language). Later also: the use of new words or phrases, neologism; an instance of this.
Origin
Late 18th century; earliest use found in Charles Plowden (1743–1821), Jesuit. From ancient Greek νεωτερισμός innovation, change from νεωτερίζειν to make innovations + -ισμός.